CN105132626A - Casting residual steel slag recycling method - Google Patents
Casting residual steel slag recycling method Download PDFInfo
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- CN105132626A CN105132626A CN201510502840.2A CN201510502840A CN105132626A CN 105132626 A CN105132626 A CN 105132626A CN 201510502840 A CN201510502840 A CN 201510502840A CN 105132626 A CN105132626 A CN 105132626A
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- steel
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- slag
- ladle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a casting residual steel slag recycling method, and particularly provides a casting residual steel slag recycling method applied to the technical field of ferrous metallurgy. By means of the casting residual steel slag recycling method, phosphorus in semisteel can be effectively removed, the cleanliness of molten steel can be improved, the temperature drop generated during converter steel tapping is small, and the consumption of semisteel covering agents and the consumption of steelmaking converter cold slag materials are effectively reduced. The casting residual steel slag recycling method includes the following steps: a, molten steel casting is carried out; b, casting residual steel slag generated after molten steel casting is poured into a semisteel tank on a spanning part crossing trolley; c, the semisteel tank on the spanning part crossing trolley is delivered to a vanadium extracting spanning part; d, semisteel tapping is carried out on the semisteel tank at a vanadium extracting furnace; e, the casting residual steel slag generated after semisteel tapping is carried out is delivered to a steelmaking converter to be smelted; f, furnace post-treatment is carried out on the casting residual steel slag; g, the casting residual steel slag is refined; and h, the steps are sequentially repeated. By means of the casting residual steel slag recycling method, the phosphorus in the semisteel can be effectively removed, the cleanliness of the molten steel can be improved, and the consumption of steel materials can be greatly reduced.
Description
Technical field
The present invention relates to the remaining slag recoverying and utilizing method of a kind of note, slag recoverying and utilizing method more than especially a kind of note being applied to technical field of ferrous metallurgy.
Background technology
In the remaining steel slag utilization of existing note, remaining for note slag is poured in sky ladle or poured in heavy iron ladle all bibliographical information and proprietary technology.Wherein publication number is: the patent document of CN1804047 (publication date: 2006.07.19), the method for steel-making utilizing residue molten steel slag in steel recycle and reuse, discloses a kind of method of making steel utilizing residue molten steel slag in steel recycle and reuse.Utilizing residue molten steel slag in steel in ladle is poured in sky ladle by the method; Be transported to converter place at the ladle filling utilizing residue molten steel slag in steel, tap in it; The ladle filling molten steel and utilizing residue molten steel slag in steel is transported to refining station, carries out refining; Ladle after refining is transported to pouring aisle, pours into a mould.This patented method is poured in sky ladle by the utilizing residue molten steel slag in steel in ladle, and haulage time is long, large to temperature drop during converter tapping.Wherein publication number is: the method for a kind of residual hot steel slag in continuous casted steel ladle of patent application document recycling of CN102399917A (publication date: 2012.04.04) discloses a kind of method of residual hot steel slag in continuous casted steel ladle recycling, it is characterized in that: during continuous casting is produced, after ladle molten steel injects the end of processing of tundish, the note afterheat-state slag of melting in ladle is poured in heavy iron ladle; Subsequently note afterheat-state slag is blended into converter with molten iron and is used for steel-making.This patented method is that the note afterheat-state slag of melting in ladle is poured in heavy iron ladle, and haulage time is long.Therefore also there is no a kind of phosphorus can effectively deviate from half steel in prior art, improve the cleanliness factor of molten steel; When making converter tapping, temperature drop is little, effectively can reduce the consumption of half steel insulating covering agent, reduces the cold slag charge consumption of steel-making converter, slag recoverying and utilizing method more than the note reducing steel technology.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of phosphorus can effectively deviate from half steel, improves the cleanliness factor of molten steel; When making converter tapping, temperature drop is little, effectively can reduce the consumption of half steel insulating covering agent, reduces the cold slag charge consumption of steel-making converter, slag recoverying and utilizing method more than the note reducing steel technology.
For solve the problems of the technologies described above the present invention adopt note more than slag recoverying and utilizing method, comprise following step:
A, pouring molten steel;
B, slag more than the note after pouring molten steel was poured into across in half cylinder of steel on chassis;
C, by cross across half cylinder of steel on chassis be transported to vanadium extraction across;
D, half cylinder of steel go out half steel at vanadium extraction stove;
E, half cylinder of steel having reclaimed note recrement is transported to steel-making converter smelts;
F, to the aftertreatment of molten steel stove;
G, refining is carried out to molten steel;
H, repeat abovementioned steps successively.
Further, in a step, first the ladle slag ladle handling of the remaining slag of note will be housed to crossing across chassis overhead with crane, then reduction ladle slag ladle, poured into note recrement across in the half steel slack tank on chassis.
Further, terminate, to completing, remaining for the note slag time of pouring into half cylinder of steel is less than 15 minutes from pouring molten steel.
Further, in b step, start remaining for note slag to pour in half cylinder of steel as ladle slag ladle mouth distance tank mouth of semi-steel tank 0.5m ~ 1m.
Further, go out in half steel process to add ferro-aluminum in Step d.
Further, the mass range adding ferro-aluminum is that half steel per ton adds 0.38 kilogram to 0.8 kilogram ferro-aluminum.
Further, go out in half steel process to add ferrosilicon in Step d.
Further, the mass range adding ferrosilicon is that half steel per ton adds 0.75 kilogram to 1.13 kilograms ferrosilicon.
The invention has the beneficial effects as follows: it is short that the application notes the remaining slag transport time, when making converter tapping, temperature drop is little.Note recrement utilizes in converter, can make full use of slag charge and the molten steel of note recrement, rapid slagging, accelerate slag flowing, effectively deviate from the phosphorus in half steel, improve the cleanliness factor of molten steel; Reduce the consumption of half steel insulating covering agent, reduce the cold slag charge consumption of steel-making converter, reduce steel technology.
Accompanying drawing explanation
Fig. 1 is schema of the present invention;
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, slag recoverying and utilizing method more than note of the present invention, comprises following step:
A, pouring molten steel;
B, slag more than the note after pouring molten steel was poured into across in half cylinder of steel on chassis;
C, by cross across half cylinder of steel on chassis be transported to vanadium extraction across;
D, half cylinder of steel go out half steel at vanadium extraction stove;
E, half cylinder of steel having reclaimed note recrement is transported to steel-making converter smelts;
F, to the capable stove aftertreatment of molten steel;
G, refining is carried out to molten steel;
H, repeat abovementioned steps successively.
In a step, first the ladle slag ladle handling of the remaining slag of note will be housed to crossing across chassis overhead with crane, then reduction ladle slag ladle, poured into note recrement across in the half steel slack tank on chassis.When the handling of ladle slag ladle is to crossing across chassis overhead, the process reducing ladle slag ladle will slowly be carried out.The process first pouring the remaining slag of note in half cylinder of steel into also requires slowly to carry out.
Terminate, to completing, remaining for the note slag time of pouring into half cylinder of steel is less than 15 minutes from pouring molten steel.Remaining for note slag is poured into time controling in half cylinder of steel within the scope of aforesaid time, can reduce haulage time, when making converter tapping, temperature drop is little.
When ladle slag ladle mouth is apart from starting remaining for note slag to pour in half cylinder of steel during tank mouth of semi-steel tank 0.5m ~ 1m in b step.The distance controlling of the remaining slag of note will be translated in aforementioned range, can so that not only slag quick but also pour into exactly in half cylinder of steel.
Go out in half steel process to add ferro-aluminum in Step d.
The mass range adding ferro-aluminum is that half steel per ton adds 0.38 kilogram to 0.8 kilogram ferro-aluminum.
Go out in half steel process to add ferrosilicon in Step d.
The mass range adding ferrosilicon is that half steel per ton adds 0.75 kilogram to 1.13 kilograms ferrosilicon.
When going out half steel, grate should be slow, prevents from slag liquid from foaming going up overflowing outside tank, as the foaming of slag liquid goes up too serious, can take the aforesaid measure adding ferro-aluminum and ferrosilicon.
The application is carrying out noting the hot recovery of remaining slag on rotating disk, can make full use of slag charge and the molten steel of note recrement, rapid slagging, accelerate slag flowing, effectively deviate from the phosphorus in half steel, improve the cleanliness factor of molten steel; Reduce the consumption of half steel insulating covering agent, reduce the cold slag charge consumption of steel-making converter, reduce steel technology.
Embodiment one, Smelting number P14608455 heat continuous casting note recrement crane winched to across chassis overhead, slow reduction ladle slag ladle, when two tank mouth spacings are 0.8m, slowly note recrement was poured into across in the half steel slack tank on chassis, casting terminates to turning over time controling that slag terminates at 10min, note recrement weight is 1.7t, by cross across half cylinder of steel on chassis be transported to vanadium extraction across, haulage time 31min, half cylinder of steel goes out half steel at vanadium extraction stove P14518730 heat, when going out half steel, grate is slow, and the foaming of slag liquid goes up, in half cylinder of steel, add 0.72Kg/t
half steelferro-aluminum deoxidation, the consumption of half steel insulating covering agent reduces 0.53Kg/t
half steel.Be transported to steel-making converter P14708439 heat after having gone out half steel to smelt, note recrement utilizes in converter.The cold slag charge add-on of converter reduces 4.5Kg/t
steel, slagging is fast, and dephosphorization effect is good, and steel quality is stablized.
Embodiment two, Smelting number P14608723 heat continuous casting note recrement crane winched to across chassis overhead, slow reduction ladle slag ladle, when two tank mouth spacings are 0.7m, slowly note recrement was poured into across in the half steel slack tank on chassis, casting terminates to turning over time controling that slag terminates at 11min, note recrement weight is 1.5t, by cross across half cylinder of steel on chassis be transported to vanadium extraction across, haulage time 35min, half cylinder of steel goes out half steel at vanadium extraction stove P14519393 heat, when going out half steel, grate is slow, and the foaming of slag liquid goes up, in half cylinder of steel, add 0.65Kg/t
half steelferro-aluminum deoxidation, the consumption of half steel insulating covering agent reduces 0.85Kg/t
half steel.Be transported to steel-making converter P14708730 heat after having gone out half steel to smelt, note recrement utilizes in converter.The cold slag charge add-on of converter reduces 5.1Kg/t
steel, slagging is fast, and dephosphorization effect is good, and steel quality is stablized.
Claims (8)
1. slag recoverying and utilizing method more than note, is characterized in that: comprise following step:
A, pouring molten steel;
B, slag more than the note after pouring molten steel was poured into across in half cylinder of steel on chassis;
C, by cross across half cylinder of steel on chassis be transported to vanadium extraction across;
D, half cylinder of steel go out half steel at vanadium extraction stove;
E, half cylinder of steel having reclaimed note recrement is transported to steel-making converter smelts;
F, stove aftertreatment is carried out to molten steel;
G, refining is carried out to molten steel;
H, repeat abovementioned steps successively.
2. the remaining slag recoverying and utilizing method of note as claimed in claim 1, it is characterized in that: in a step, first the ladle slag ladle handling of the remaining slag of note will be housed to crossing across chassis overhead with crane, then reduce ladle slag ladle, note recrement was poured into across in the half steel slack tank on chassis.
3. the remaining slag recoverying and utilizing method of note as claimed in claim 2, is characterized in that: terminate, to completing, remaining for the note slag time of pouring into half cylinder of steel is less than 15 minutes from pouring molten steel.
4. the remaining slag recoverying and utilizing method of note as claimed in claim 3, is characterized in that: when ladle slag ladle mouth is apart from starting remaining for note slag to pour in half cylinder of steel during tank mouth of semi-steel tank 0.5m ~ 1m in b step.
5. the remaining slag recoverying and utilizing method of note as claimed in claim 1, is characterized in that: go out in half steel process to add ferro-aluminum in Step d.
6. the remaining slag recoverying and utilizing method of note as claimed in claim 5, is characterized in that: the mass range adding ferro-aluminum is that half steel per ton adds 0.38 kilogram to 0.80 kilogram ferro-aluminum.
7. the remaining slag recoverying and utilizing method of note as claimed in claim 1, is characterized in that: go out in half steel process to add ferrosilicon in Step d.
8. the remaining slag recoverying and utilizing method of note as claimed in claim 7, is characterized in that: the mass range adding ferrosilicon is that half steel per ton adds 0.75 kilogram to 1.13 kilograms ferrosilicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502840.2A CN105132626A (en) | 2015-08-14 | 2015-08-14 | Casting residual steel slag recycling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502840.2A CN105132626A (en) | 2015-08-14 | 2015-08-14 | Casting residual steel slag recycling method |
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| CN105132626A true CN105132626A (en) | 2015-12-09 |
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| CN201510502840.2A Pending CN105132626A (en) | 2015-08-14 | 2015-08-14 | Casting residual steel slag recycling method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705059A (en) * | 2018-05-29 | 2018-10-26 | 马鞍山尚元冶金科技有限公司 | It is useless to pour remaining straight forming method |
| CN113102712A (en) * | 2021-04-15 | 2021-07-13 | 马鞍山钢铁股份有限公司 | Steel ladle casting residue recycling method suitable for ultra-low carbon steel |
| CN114540567A (en) * | 2022-03-09 | 2022-05-27 | 天津市新天钢联合特钢有限公司 | Technological method for recycling residual steel slag poured by continuous casting ladle to converter tapping |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804047A (en) * | 2006-01-19 | 2006-07-19 | 邯郸钢铁股份有限公司 | Method for reclaiming and cyclic utilizing residue molten steel slag in steel making |
-
2015
- 2015-08-14 CN CN201510502840.2A patent/CN105132626A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804047A (en) * | 2006-01-19 | 2006-07-19 | 邯郸钢铁股份有限公司 | Method for reclaiming and cyclic utilizing residue molten steel slag in steel making |
Non-Patent Citations (1)
| Title |
|---|
| 汪泽花: "奇思妙想创效益——攀钢钒炼钢厂铸余渣热回收利用攻关记", 《中国攀枝花网》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705059A (en) * | 2018-05-29 | 2018-10-26 | 马鞍山尚元冶金科技有限公司 | It is useless to pour remaining straight forming method |
| CN108705059B (en) * | 2018-05-29 | 2019-12-13 | 马鞍山尚元冶金科技有限公司 | direct forming method for waste casting residue |
| CN113102712A (en) * | 2021-04-15 | 2021-07-13 | 马鞍山钢铁股份有限公司 | Steel ladle casting residue recycling method suitable for ultra-low carbon steel |
| CN114540567A (en) * | 2022-03-09 | 2022-05-27 | 天津市新天钢联合特钢有限公司 | Technological method for recycling residual steel slag poured by continuous casting ladle to converter tapping |
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Application publication date: 20151209 |
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| RJ01 | Rejection of invention patent application after publication |